problem with all those long lenses is that yes your a nice long distance away - but at that range everything starts to get a bit flat in shots - better try something like :
24-70mm or
24-105mm

if your feeing fit you could try for a 70-200mm instead.

Then all you need are a good set of running trainers and a reddy face (it helps to hide the red marks of slaps when you get caught ). Make sure you have good insurance as well..........
*I find it funny how many of us in this thread are canon shooters *